Intermittent use of iron supplements vs placebo or no intervention: Iron deficiency (using ferritin concentrations)
It is very uncertain whether intermittent use of iron supplements changes iron deficiency (using ferritin concentrations) compared with placebo or no intervention (very low certainty).
What each review found
Current versions only| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Intermittent use of iron supplements vs placebo or no intervention Iron deficiency (using ferritin concentrations) · children under 12 years of age It is very uncertain whether intermittent use of iron supplements changes iron deficiency (using ferritin concentrations) compared with placebo or no intervention (very low certainty). Intermittent iron supplementation for improving nutrition and development in children under 12 years of age (2011) · Cochrane Headline outcomes only | RR 0.24 [0.06, 0.91] | 3 studies · 431 participants | Very low |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Intermittent iron supplementation for improving nutrition and development in children under 12 years of age 2011 · Cochrane Headline outcomes only | Not reported | list not extracted yet | Not assessed |
Studies behind the findings
None of these reviews ties its included studies to this outcome in the data here. Cochrane reviews and reviews with headline outcomes only do not list their studies yet.
How reviews are matched to this question
Reviews word the same question differently. Four decision models (TypeSafe's Jev, Liquid AI's d1-ultra, SubQ Snap and Baseten's Elephant) judged each wording of the population, intervention, comparator and outcome against the others; two wordings count as the same when at least three of them agree and none clearly disagrees, and findings count as this question only when all four elements match. Timing, setting and subgroup never split a question: they are shown on each finding.